Lubricator.



No. 664,I70. Patented Dec. I8, |900.

D. R. MAcBAIN.

L U B R l C A T0 R.

rApplizion ma July 17, 1900.)

o. w@ m wo 2 Sheets-She -lllllllil (Ilo Model.)

UNITED STATES PATENT OFFICE.

DONALD ROBERTSON M'ACBAIN, OF JACKSON, MICHIGAN.

LUBRICATOR.

SPECIFICATION formingpart of Letters Patent NO.'664,1'70, dated December 18, 1900.

Application filed July 1'7, 1900. Serial No. 23.946. (No model.)

To a/ZZ whom, it may concern.: j

Beit known that I, DONALD ROBERTSON MACBAIN, a citizen of the Dominion of Canada, and a subject of the Queen of GreatBritain, residing at Jackson, in the county of Jackson and State of Michigan, have invented certain new and useful lmprovementsin Lubricators; andi do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to lubricators of the type for oiling machinery and depending upon condensation displacement of the oil which is carried forward positively to the part to be lubricated by steam or like iiuid medium.

For a full description of the invention and the merits thereof and also to acquire a knowledge of the details of construction of the means for effecting the result reference is to be had to the appended description and drawings hereto attached.

While the essential and characteristic features of the invention are necessarily susceptible of modification, still the preferred'embodiment of the invention is -illustrated in the accompanying drawings, in which- Figure 1 is a side elevation showing the invention in operative relation. Fig. 2 is atop plan view. Fig. 3 is a longitudinal section of the regulator about on the line Y Y of Fig. 5'. Fig. 4 is-a top plan View of the regulator. Fig. 5 is a section of the regulator about on the line X X of Fig. 4. Fig. 6 is an end view of the regulator. Figs. 7 and 8 are detail views of the throttle-lever, showing a bar secured thereto for actuating the regulator when the latter and the throttlelever are out of line.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The steam-turret l for the throttle-stem, a

' boiler 2, with its steam-dome 3, throttle-lever 4, and lubricator 5 are well-known parts and may be of anydesired form and construction common in the art. The lubricator ment type and is adapted to be connected with any convenient portion of the boiler by means of a pipe 6 in the usual way.

The regulator is disposed in proximal relation to the throttle-lever 4, so as to be actuated thereby when opened to admit steam to the engine. The regulator comprises a casing 7, an inner valve-seat S, and one or more lateral collars 9 for coupling thereto of the pipe 10, employed for conveying the steam or like fluid medium to the siphon or delivery-pipe 11 ot' the lubricator. A nipple 12 projects from the casing 7 in the' rear of the valve-seat 8 and connects with the boiler and with a pipe 13, located within the boiler and extending into the dome 3 thereof, so as to supply dry steam to the regulator when in operation. The collar or collars 9 are located yin advance of the valveseat 8, so that the valve 14 is adapted to controlcommunication between the ports opening into the parts 9 and 12. An extension 15 is provided atione end of the casing 7 and constitutes a guide for one end of the valve-stem 16,and a stuft"- ing-box 17 is providedat the opposite end of the casing 7 for the valve-stem to operate through and to maintain a steam-tight joint between the casing and the said valve-stem. The valve 14 is secured to the stem 16 at a point between its ends and is normally seated, a spring 18 encircling the inner end of the valve-stein and holding the valve upon its seat 8. A pipe 19, having a valve 20, is connected with the nipple 12 and carries oft any water of condensation that may accumulate in the casing 7 or parts connected therewith. A pipe 21 is connected with the siphon or delivery-pipe of the lubricator and extends to the steam-chest or other part of the engine to be lubricated.

In assembling the parts the regulator is located adjacent to the pivotal support of the throttle-lever 4, so as to have a comparatively small movement imparted to the stem 16 when unseating the valve 14.. ln the event of the valve-stem 16 being out of line with the throttle-lever 4 a bar 22 is connected with the latter, as shown most clearly in Figs. 7 and 8, and this bar engages with the stem 16, so as to unseat the valve `14 when operating the lever 4 to open the throttle. The casing 7 is by preference composed of two parts, which are connected by a'screw-thread joint 23, the

inner end of the part having the stuiing-box 17 being flared to provide the valve-seat 8. By thus constructing the casing 7 the interior can be conveniently bored and the spring 18 and valve can be readily placed in position and are accessible for repairs and cleaning.

The parts being assembled su bstani ially as set forth and the throttle heilig closed, the valve 14 is seated, and upon opening the throttle by actuating the lever a the valve 14 is unseated by the throttle-lever pressing upon the valve-stein 16. When the valve 14 is unseated, steam from the dome 3 enters the pipe 13 and passes into the casing 7, around the valve 14, and out through a collar 9 and pipe 10 to the lubricator, and from thence through the pipe 21 to the part to be lubricated, forcibly carrying the displaced lubricant to the required point of application. When the throttle is closed, the Valve 14 seats itself either by the action of the spring 18 solely or by the pressure of the steam against the rear face of the Valve 14. The employment of the spring 18 insures the positive seating of the valve and for this reason is preferred. It is noted that the steam exerts a greater pressure against the rear face of the valve by reason of the greater extent of surface due to a closs-section of the valve-stem. The forward end portion of the valve-stem projects beyond the easing 7, and hence reduces the surface at the front of the valve by an amount corresponding to the cross-sectional area of the valve-stem. The inner end portion of the valve-stein 1G does not fit the guide 15 steamtight. Hence the steam at all times exerts a pressure thereon.

Having thus described the invention, what is claimed as new is- 1. In means for lubricating steam-engines and parts requiring the oil to be fed thereto positively, a regulator adapted to be actuated by the throttle-lever and comprising a casing connected with, respectively, the dry-steam space of a boiler and the delivery-pipe of a lubricator, and a valve operating in the said casing to control communication between the oil-delivery and the dry-steam pipes, and a bar adapted to be secured to a side of thel throttle-lever to engage with the stem of the said valve, substantially as specified.

2. In means for lubricating steam-engines and parts requiring the oil to be fed thereto positively, a regulator consisting of a casing having a guide extension at one end, a stuffing-box at the opposite end, side openings at different points in its length, and having a valve-seat between the said openings, one of the said side openings being adapted to be connected with the dry-steam space of the boiler and the other with the delivery-pipe of the lubricator, and a valve having its stem extending in opposite directions, one end working in the guide extension of the casing and the other working through the stulingbox and projecting beyond the casing and arranged to be engaged by the throttle-lever, substantially as specified.

In means for lubricating steam-engines and parts requiring the oil to be fed thereto positively, a regulator consisting of a twopart casing, each part having a side opening and the inner end of one of the parts constituting a valve-seat between the side openings of the parts when united, one of the said side openings being adapted to be connected with the dry-steam space of the boiler and the other with the delivery-pipe of the lubricator, and a stemmed valve operating in the casing, with the stem protruding and disposed to be engaged by the throttle-lever to unseat the valve simultaneously with the opening of the throttle, substantially as specified.

L1. In means for lubricating steam-engines and parts requiring the oil to be fed thereto positively, a regulator consisting of a twopart casing connected by a screw-thread, each part having a side opening, and the inner end of one of the parts constituting a valve-seat between the side openings, a stufiing-box at the outer end of one part and a hollow guide extension at the outer end of the other part, the side openings of the casing being adapted to be connected with, respectively, the drysteam space of the boiler and the deliverypipe of the lubricator, a valve having its stem extending in opposite directions, one end working in the tubulaiguide extension and theother working through the stuiing-boxand adapted to be engaged by the throttle-lever, and a spring located in the part of the said casing having the tubular guide extension and confined between a shoulder thereof and the valve, substantially as specified.

In testimony whereof I aiiix my signature in presence of two witnesses.

DONALD ROBERTSON MACBAIN. [L. s]

'Witnessesz ISAAC R. PARKER,- JoHN M. HARRINGTON.

IOO 

